A hybrid borotungstate-coated metal-organic framework with supercapacitance, photocatalytic dye degradation and HO sensing properties
The compounding of polyoxometalates (POMs) with structurally well-defined and porous metal-organic frameworks (MOFs) has become a hot research topic. Here, a core-shell type hybrid, {Ag 5 BW 12 O 40 }@[Ag 3 (μ-Hbtc)(μ-H 2 btc)] n (called {Ag 5 BW 12 O 40 }@Ag-BTC-2, where BTC = 1,3,5-benzyl carboxyl...
Saved in:
Published in | Dalton transactions : an international journal of inorganic chemistry Vol. 51; no. 19; pp. 7613 - 7621 |
---|---|
Main Authors | , , , , , , |
Format | Journal Article |
Published |
17.05.2022
|
Online Access | Get full text |
Cover
Loading…
Summary: | The compounding of polyoxometalates (POMs) with structurally well-defined and porous metal-organic frameworks (MOFs) has become a hot research topic. Here, a core-shell type hybrid, {Ag
5
BW
12
O
40
}@[Ag
3
(μ-Hbtc)(μ-H
2
btc)]
n
(called {Ag
5
BW
12
O
40
}@Ag-BTC-2, where BTC = 1,3,5-benzyl carboxylic acid), was successfully prepared
via
a simple grinding method. IR, XRD, SEM, TEM, and XPS analysis was used to confirm the structure. The specific capacitance is 179.1 F g
−1
when the current density is 1 A g
−1
, using nickel foam as the collector, and the capacitance retention is 97.4% after 5000 cycles. The resulting aqueous-based symmetric supercapacitor has a power density of 496 W kg
−1
and an energy density of 12.4 W h kg
−1
. In addition, the degradation rates using {Ag
5
BW
12
O
40
}@Ag-BTC-2 toward methylene blue (MB), rhodamine B (RhB), and methyl orange (MO) exceeded 90% in 140 min and remained essentially unchanged over five replicate experiments, showing high photocatalytic activity. Meanwhile, when {Ag
5
BW
12
O
40
}@Ag-BTC-2 acts as a H
2
O
2
biosensor, it has a low detection limit (0.19 μM), a wide linear range (0.4 μM-0.27 mM) and high anti-interference properties. This shows that the synthesis of POMOFs
via
a grinding method is an effective strategy to improve the performance.
Borotungstate-coated metal-organic framework hybrids were synthesized
via
a simple grinding method, and the optimum material showed good supercapacitor, photocatalytic dye degradation, and H
2
O
2
sensing performance. |
---|---|
Bibliography: | https://doi.org/10.1039/d2dt00976e Electronic supplementary information (ESI) available. See DOI |
ISSN: | 1477-9226 1477-9234 |
DOI: | 10.1039/d2dt00976e |